• • Techniques
    • Trenberth Approximation
    • Q-Vectors
    • Q-Vectors on AWIPS
    • QG Diagnosis Example
  • Uses and Misues
    • Misuse of PVA in Operational Environments
      
    • Warm Advection Wins Again (2001)
      
    • Pitfalls of Ignoring WarmAdvection: case study (2000)
      
    • Vorticity Advection Pitfall (1999)
      
    • "Pineapple Express" and Warm Advection, 1/21/97
      
    • Dynamics is More than Vorticity Advection, Part I
      
    • Dynamics is More than Vorticity Advection, Part II (C. Doswell)
      
    • PVA Only A Part (sometimes small) of the Story:
      Part 1--Supercell Development in the Southern Great Plains
      Misuse of PVA in Operational Environments